Don't you ever see something funny and think "Wow that was some funny ****, I want other people to experience the hilarity."? If wanted to make our own content all the time, we'd go to Deviant Art or Newgrounds.

Who cares? If you care that much about internet thumbs then you need to rethink your ******* priorities. If it's not something he made, he doesn't need the credit or publicity. Funny **** is gonna get reposted, because it's funny. You might share it with a cousin one day, find out that your cousin posted it on FJ and it got frontpage, are you gonna get mad at your cousin? Why would you, you shared it with him because it was funny and you wanted him to know about it, he shared it with everyone else because he thought it was funny and wanted people to laugh with him.